I'm writing a scene where one of my main characters gets revenge on a guy who nearly got him killed by framing him for stealing $50,000 worth of drugs from traffickers. I wanted to illustrate my main character's specific concept of justice by having him shoot the guy in the knee, his logic being that the guy'll be forced to spend the majority of the money he earned on surgeries to fix his leg (he doesn't have insurance) and escape the traffickers. Is this a realistic idea? My main character uses a 44. caliber bullet to do the job, and shoots him at point-blank range. What kind of damage could I be looking at? Should I worry about the character bleeding out very easily? My character wants to cripple him, not kill him. Also, what kind of costs would i be seeing? I'm not super knowledgeable on significant joint injuries or medical bills, as I've been fortunate enough to not have to deal with either. Any help would be appreciated.